The correct answer is ... wrote:
It's not. But since he's a global warming nut job, Obama and lame stream media are showcasing him so that Obama can make a money and power grab under the guise of saving the planet.
The Pope himself is not bright enough to see through the climate change scam and coming from a Latin American communist liberation theology, allowed the openly Marxist Bishop Marcelo Sanchez Sorondo take control of the pontifical academies of sciences and social sciences.
Sorondo could care less whether climate change is true or not, but it is useful to push his Marxist agenda and so he ignored information from the Vatican’s most influential scientists demonstrating that global warming was more theoretical than empirical.
I can see why Obama has embraced him, having spent vast amounts of money on trashing your own economy by, as examples: driving every steelworks and aluminium works overseas, by not allowing the development of the XL pipeline, interfering with fracking, and establishing a war on coal.
I’ll leave Americans to work out what sort of agenda your own president is following, but the climate will keep obstinately changing whatever mankind gets up to.